Hanna Instruments HI931, User Manual, Page: 129 / 218

9-9
ISE MODE
For Custom ISE:
• Press
to edit the Ion constants for the selected custom ISE.
• Use the and keys to highlight the desired ion constant and press to edit the value.
• Set the Ion Name (up to 10 characters can be entered).
• Set the appropriate Molecular Weight (in g/mol) using the numeric keys. Press
to save the value or press to
return to the previous screen.
• Select the appropriate Electric Charge/Slope. Use the and keys to select the value and then press . If the
electric charge is none, manually set the slope by pressing . Press to save the value or press to
return to the previous screen.
9.2.11. CONCENTRATION UNIT
Options: ppt (g/L), ppm (mg/L), ppb (µg/L), mg/mL, M (mol/L), mmol/L, %w/v or user defined